IDW11120
Australian Government Bureau of Meteorology
Western Australia
Issued at 7:01 am WST on Saturday 19 September 2026
for the period until midnight WST Monday 21 September 2026.
Please be aware
Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height.
A weak trough near the Pilbara and Kimberley coasts moves inland over the weekend, while a weak ridge builds over northwest Gascoyne. A broad trough will develop over the north next week as the ridge weakens.
Winds: Northeast to southeasterly 10 to 15 knots becoming variable about 10 knots in the late afternoon. Seas: Below 1 metre. Swell: Northeasterly around 1 metre. Weather: Mostly sunny.
Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Northeasterly around 1 metre. Weather: Mostly sunny.
Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Sunny.
Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Partly cloudy.
Winds: Variable about 10 knots becoming south to southwesterly 10 to 15 knots in the middle of the day then tending northwest to southwesterly in the early afternoon. Seas: Below 1 metre. Swell: Westerly around 1 metre. Weather: Sunny.
Winds: Variable about 10 knots becoming westerly 10 to 15 knots during the afternoon then decreasing to about 10 knots during the evening. Seas: Below 1 metre. Swell: Westerly around 1 metre. Weather: Sunny.
Winds: South to southwesterly 10 to 15 knots becoming variable about 10 knots in the morning then becoming west to northwesterly 10 to 15 knots in the early afternoon. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Mostly sunny.
Winds: West to southwesterly 10 to 15 knots becoming variable about 10 knots in the morning then becoming west to northwesterly 10 to 15 knots in the middle of the day. Seas: Below 1 metre. Swell: Westerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore west of Port Hedland. Weather: Sunny.
Winds: West to southwesterly 10 to 15 knots becoming variable about 10 knots during the morning. Seas: Below 1 metre. Swell: Westerly around 1 metre. Weather: Sunny.
Winds: Southerly 10 to 15 knots turning west to southwesterly in the early afternoon. Winds reaching up to 20 knots in Exmouth Gulf in the late evening. Seas: Below 1 metre. Swell: West to southwesterly below 1 metre inshore, increasing to 1 to 2 metres offshore. Weather: Sunny.
Winds: West to southwesterly 10 to 15 knots tending south to southwesterly before dawn then tending west to southwesterly in the early afternoon. Winds reaching up to 20 knots offshore west of Barrow Island during the morning. Seas: 1 to 1.5 metres, decreasing to 1 metre around midday. Swell: West to southwesterly below 1 metre inshore, increasing to 1.5 to 2.5 metres offshore. Weather: Sunny.
Winds: South to southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: West to southwesterly below 1 metre inshore, increasing to 1 to 2 metres offshore. Weather: Mostly sunny.
The next routine forecast will be issued at 1:01 pm WST Saturday.
* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones. Marine forecasts are also available on VHF and HF radio. View the radio schedule on www.bom.gov.au/marine
Check the latest Coastal Waters Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones